<?php
header('content-type:text/html;charset=utf-8');

//$str = array('houdunwang','smgui','yabie');


//$x = ltrim($str,'后');
//$re = explode('x','后x盾x网');
//
//print_r($re);
//
//print_r(implode('---FUCK---',$str));

$x = 'houdunwangwawawawaw';
echo substr($x,5,3)


?>